Inventors:
Alberto Luna - Greenville SC, US
Joshua Leigh Miller - West Chester OH, US
William Terence Dingwell - Lebanon OH, US
Michael Jay Brunck - Cincinnati OH, US
William Lee Imhoff - Hamilton OH, US
Paul Moncelle - Cincinnati OH, US
Dale Robert Lombardo - Blue Ash OH, US
Andrew Philip Woodfield - Maineville OH, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
B21D 53/78
B21K 3/04
US Classification:
298897, 29 9001, 29 907, 72 53, 72 75
Abstract:
A method of reducing crack propagation in an airfoil includes: providing an airfoil having a root spaced apart from a tip, spaced-apart leading and trailing edges, a suction side extending from the leading edge to the trailing edge, and an opposed pressure side extending from the leading edge and the trailing edge, supporting the airfoil against bending loads; and burnishing the airfoil using a burnishing element, so as to create at least one burnished section of residual compressive stress, the at least one burnished section being located adjacent the leading edge and spaced from the leading edge by an offset distance selected so as to avoid deformation of the leading edge.
